Eeg And Sleep Physiology Ppt Fix -

EEG and PSG are vital for distinguishing between conditions that look similar clinically but have different pathological roots.

High frequency, low amplitude; associated with wakefulness and REM sleep. Alpha Waves (8–13 Hz): Relaxed wakefulness with eyes closed. Theta Waves (4–8 Hz): Characteristic of light sleep (N1). Delta Waves (0.5–4 Hz): High amplitude; indicative of deep, slow-wave sleep (N3). 2. The Architecture of Sleep (Sleep Stages) eeg and sleep physiology ppt

In a clinical setting, we rarely look at EEG alone. Sleep is diagnosed using , a multi-parametric study that typically includes: EEG and PSG are vital for distinguishing between

A distinct alpha rhythm (8–12 Hz) appears over the occipital channels. EMG: High muscle tone. Stage N1 (Light Sleep / Transition) Theta Waves (4–8 Hz): Characteristic of light sleep (N1)

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Sleep is not a uniform state; it consists of complex, cyclic stages governed by two primary mechanisms: